Improvement in cutting attachments for sewing-machines



M. A. GRAHAM. [Iutting-Attachme nts for Sewing-Machines.

No 157,322, Patented Dec.1,l874.

Witnesses Inventor UNITED STATES PATENT OFFIon.

MARCELLUS A. GRAHAM, OF SAN FRANCISCO, CALIFORNIA.

IMPROVEMENT lN CUTTING ATTACHMENTS FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 157.322, dated December1, 1874; application filed August 12, 1874.

To all whom it may concern Be it known that I, MARCELLUS A. GRA- HAM, ofSan Francisco city and county, State of California, have invented aCutting Atta ohment for Sewing-Machines; and I do hereby declare thefollowing description and accompan ying drawings are suflicient toenable any person skilled in the art or science to which it most nearlyappertains to make and use my said invention without further inventionor experiment.

My invention relates to that class of sewingmachine cutting attachmentsin which an oscillating cutting-blade is operated against a fixedcutting blade, through intermediate means, from the ncedlearm.

My invention consists in certain details of construction, as hereinaftermore fully de scribed, by which I simplify the cutter, and avoid anyalteration in order to attach and use the cutter.

Referring to the accompanying drawing for a more complete explanation ofmy invention,.Figure 1 is a perspective view of my attaohment.

A is an arm, which lies horizontally upon the cloth-plate of asewing-machine. This arm has at one end a post, B, to support thevibrating arm C, which is operated by the needle-arm. At the oppositeend the arm Ais bent at right angles with itself, and has formed upon itone jaw or cutter, D, ofa pair of shears. The upper or movable jaw, E,is hinged to the back part of the angular extension of the arm A, andits outer end lies in a line just beneath the vibrating arm C. This armis operated by the needle-arm, which presses it down at every stroke,and thus presses the jaws of the shears together. A spring, F, serves toraise the upper jaw after each depression, and thus opens the shears foranother cut. The spring Gr raises the arm C at the same time.

In order to determine the width of the goods to be cut I employ a gage,H, having a set-screw, I, by which the bar A is secured at any desiredpoint. A screw passing through this gage secures it to the cloth-plate,and, as the bar A passes through the gage, the Whole device is easilyfastened in place.

Asprin g bar or arm, J, is fastened, as shown, at one end, and liesparallel with the arm A, and close beside it.

The gage H is set as near the needle as is suitable, and, the set-screwI being loosened, the arm A, carrying the cutter, is moved to therequired point, and. secured. The cloth to be cut is then passed beneaththe spring-bar J, which folds an edge over, so that the needle will passthrough it, and this edge is thus hemmed while the cutter is severingthe goods.

The arm C is attached to the needle-arm by a loose clip, K, which slidesalong the arm C, and has a hole in it through which the needle passes.

In case the edge of goods was not to be hemmed a short pin might besubstituted for the needle, so that it would enter the clip but nottouch the cloth.

This device is extremely useful for cutting the trimming which is usedin narrow stripsin large quantities for ladies dresses 5 and it can bemade with great rapidity and exactness by simply running the machine ata considerable speed.

Having thus described my invention, what Iclaim, and desire to secure byLetters Patent, 1s-

The bars AJ, in combination with the shears E D, spring I*, post B.spring G, rod C, and clip K, all constructed, arranged, and operated asset forth.

In witness whereof I hereunto set my hand and seal.

MARCELLUS A. GRAHAM. [L. 8.]

Witnesses JNo. L. 1300M G. M. RICHARDSON.

